装备系统完结，修复并加入很多

Assets/storeSystem/storeItemSO.cs

@@ -8,6 +8,7 @@ public class storeItemSO : ScriptableObject
     [Header("Basic Info")]
     public string itemName;
     public Sprite itemIcon;
+    public ItemRarity itemRarity = ItemRarity.None;
     public int itemID; // Unique identifier for the item
     public int itemSinglePurchaseQty; // 物品单次购买数量
     public int itemPurchaseQuota; // 物品限购配额，-1为不限购
@@ -29,6 +30,8 @@ public class storeItemSO : ScriptableObject
     public expBottlesSO associatedExpBottle; // Only used by single-target exp bottles such as 78001-78006
     public growthMaterialSO associatedGrowthMaterial; // Only used by breakthrough materials such as 78021-78024
     public equipmentConsumableSO associatedEquipmentConsumable; // Only used by equipment upgrade/breakthrough consumables such as 78101/78111
+    public smeltStageRewardSO associatedSelectableEquipmentRewardSource; // Used by shop entries that grant equipment through ctas selection
+    public int associatedSelectableEquipmentRewardIndex = -1;
 
     [Header("Purchase Cost")]
     public List<CostRequirement> costRequirements = new List<CostRequirement>();
@@ -51,6 +54,7 @@ public class storeItemSO : ScriptableObject
     public enum CurrencyType
     {
         coins,
+        material,
     }
 
     public enum StoryPassageGrantMode